Sewer valve or trap.



PATENTED MAR. 13, 1906. P. F. LENHART.

SEWER VALVE 0R TRAP.

APPLICATION FILED SEPT. 10, 1904.

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5% WM Q4 IQWGZ M UNITED STATES PATENT OFFICE.

PHILIP F. LENHART, OF BROOKLYN, NEW YORK, ASSIGNOR TO PERFECT SEWER TRAP MANUFACTURING COMPANY, OF NEW YORK, N. Y., A QORPORATION OF NEW YORK.

- ,sEwER VALVE on TRAP.

. no, 814,738. Specification of Letters Patent. Patented March 13, 1906.

Application flled fleptember 10, 1904. Serial No. 228,962.

York, ave invented a new and useful Improvement in Sewer Valves or Traps, of which I the following is a description.

- with the hand-hole plug This invention relates to im rovements in sewer tra s or valves, and particularly to the type or c ass of such devices which automatically 0 en to permit thepassage of water, &c., an automatically close to prevent the flow of backwater or as. a

It is an object of tlns invention to provide a compact and effective sewer valve or trap which can be located or disposed in any character of pipe-line, water, or sewer connection. It is another object of; this invention to provide an effective and cheaply-constructed sewer valve or trap which is simple in construction and operation-and accessible for purposes of cleaning, repair, and examination. I

Another object of this invention is to provide a sewer valve or trap which will permit the passage of all fluids or substances into sewers or reservoirs, but which will prevent the backing u or flowing of such fluids or substances in t e o posite direction.

With the above 0 jects in view and others which will appear during the course of this description my invention consists in the parts, features, and combinations of elements ereinafter described and claimed.

In the drawings forming part of this s ecification, Figure 1 representsa longitu inal vertical section of the trap or valve and its casing. Fig. 2 is a top plan of the casing and valve removed. Fig. 3 is a perspective vlew showing details of the valve, and Fig. 4 shows in longitudinal vertical section the application of my invention to the style of traps technically known as running and basm. 4

Referring to the drawings, the numeral 1 indicates the casin' which, as shown, is made in one iece, this. eing important not only from t e standpoint of manufacture, but also for the reason that it avoids the possibility of leakage from pressure, bad packing in joints, or expansion and contraction under changes of atmosphere. As shown, the inner section is much shorter than the outer county of Kings, and State of New section and is Iprovided with the valve-seat portion 2 and t e enlarged couplingportionB,

the two being of different dimensions for obvious structural reasons. The valve-seat portion2 extendsa short distance beyond and partially closes the hand-hole, which is sealed y the cap or plug 4, formed with screwthreads to enable it to be screwed into place, as shown at 5, in the vertically-projecting flange 7 of the casing. The screw plug or cap 4 in its bottom is'provided with a .concave portion or recess, producing the space 6 between the valve-seat portion 2 of the casing and the bottom of the plug 4, this chamber or space 6 being provided for the reception of the upper portion of the valve, as hereinafter described. The to flange 4 of the cap rests on the flange 7 an closes and ,tightl seals the hand-hole. The outer section of t e casing is also provided with an enlarged portion at its to providing the shouldered reee tacle or epression 8 for the reception of the valve-lid, as hereinafter described. At its bottom the casing is provided with the depression 9, which 1s located directly opposite to and below the hand-hole, which is closed by the plug 4, and the casing is also provided with the groove 10 in the forward end of the valve-seat 2 for the reception and retention of the valve, said groove being flared from bottom to top and open at the top, as shown in Fig. 2. D

The automatically-acting valve consists of verge from top to bottom, as shown in Figs. 1, 3, and 4, and which is made of dimensions such that it fits tightly within the groove 10 and projects above and beyond the top of the latter, as shown in Figs. 1 and 4. As shown the body portion 11, which is caused to conin Fig. 3, the body of the valve is provided with the laterally-extending integral flange portion 12, proportioned, so as to be much wider at its bottom than at its top. The

valve-lid 13 is made of a size to com letely cover the o enin in the flange 12 and he substantially ush a 1 around with the outer edge and surface of said flange, said valve-lid 13 being provided with the lugs 14, apertured for the reception of the pivotal pin 16, which passes through said lugs and also through ears 15, formed upon or attached 1n any suitable manner to the body of the valve 11 at the top of the flange 12. It will be noted that the lugs 14 on the valve-lid are located 'between and play closely to'the ears 1-5 on the valve-body, this construction and disposition being for the purpose of preventing an lat-' body by relieving the pivotal pin 16 of lateral strain and t owing whatever strain or drag there may be upon the ears and lugs By the construction just described a very simple, effective, strong, and easy-working pivotal connection is produced and one which does not easily get out of order and which may be readil repaired without having to renew any 0 the main parts of the valve. At the top of the flange 11 an aperture or elongated slot is provided for the purpose of lifting the valve from its seat, as ereinafter described. The valve is com-' posed or made of a metal, composition, or I otherwise which will not corrode, rust, or be otherwise injuriously aflected byliquids or gases.

In basin-traps, runnin -traps, or others rovided with angles or el ows, as shown in ig. 4, the body portion of the casing would be provided with the outer section 18, the basin orelbow portion 19, the shoulder portion 20, and the coupling portion 21. The screw-threaded flange portlon of the hand.- hole 22 receives the plug 23 in the same manner as shown in Fig. 1, and the structure of said plug or ca is substantially the same as that shown in ig. 1. The valve-seat 24, the valve-body 25, and the valve-lid 26 are all substantially the same as shown in Figs. 1 and 3. Obviously the trend or disposition of the coupling portion 21 is immaterlal in so far as the lmportant features of m invention are concerned, for in basin-traps t e coupling will extend vertically or at an angle relatively to the valve and valve-seat, and in basin-traps the elbow 19 will be provided with a hand or drain hole fitted with and tightly closed by a plug or screw-cap 29 Fig.

4, in general structure substantially the same as the plug 4. The importance of my invention in this connection will now be appreciated when it is considered that to clean out a basin-tra the plugs 23 and 29 are removed,

the valve' ifted out of lace, and a hose inserted for completeand rapid flushing, and

if from long dlsuse the water in the elbow should become evaporated no gas can pass up through the basin because of in automaticall closing and normally close valve.

4 It wil now be seen that the casing in Fig. 1

is so constructed as to rovide a seat for the valve which is afforded y the groove 10, the

flange 11 of the valve being entered at the top of the groove at its largest portion and pushed down into place, as shown in Fig. 1,

'remove-the-valve from its seat where it tightly fits and wedges itself in place, it beingl only necessary to putty or pack the joint t us made between the valve and its seat in order to prevent leakage. The space between the valve-seat 2- and the cap or plug 4 is provided for the purpose of receiving the top of the valve-body and to allow the free workin of the lid and pivotal portion of the valve, 1t being apparent that when it is desired to remove the valve frorfl its seat it is only necessary to unscrew the plug 4, insert an implement in the aperture or slot 17, and b using the top of the flange 7 as a fulcrum. 'l he depression 8 in the top of the casing is for the reception of the valve-lid 13, as shown by dotted lines in Figs. 1 and 4, this permitting the free passage of all fluid or substances through the valve and casing and also enabling'the valvelid 13 to become flush with the valve-casing at the top and present a substantiall uniform or continuous surfaceat the topoi said casing from the inner end of the valve-seat 2 to the end of the casing. The de ression 9 at the bottom of the casing is for t e purpose of affording a clearance between the enlarged portion, lip, or bottom of the flange 12 and the casing to rovide for the receptlon or collection of sedlment or other matter in case of vent an sediment or obstruction collecting about t e valve-opening, so as to interfere with the proper working of the valve-l1d.

It will be noted that thevalve is disposed in its seat directly below the hand-hole, this being of great importance in connection with cleaning out the sewer-trap or removing the valve structure for any purpose, and by covering the valve structure with a cap or lug inserted and tightly retained in the handole the breaking and injury to the valve are avoided and backflow of fluids is prevented, the plug or cap 4 being tightly screwed into place by means of a wrench applied to the angular extension 28. It wil also be noted that by this structure I am enabled to make my casing of a single piece or casting, as heretofore mentioned, thus providing a strong, water-tight, and compact structure. Furthermore, by extending the valve-seat 2 so as to cause the same to project artially under the hand-hole and partial y close the same means are rovided whereby the chance for sewage to co lect in and about the handhole is minimized, because the valve-seat 2 continues the passage through the casing 1 and directs the sewa e through the same and beyond the hand-ho e, thus preventing said sewage from reaching the hand-hole and clogging and accumulating thereat, and, again, as

previously stated, the valve-seat holds the valve structure in such position that when sewage and without any difficulty or obstruc-.

tion caused by the latter.

From the above description it will be understood that .I have provided a simple, reliable, .and effective device which automatically opens to permit the discharge of sewage, &c., and which will automatically close to revent the passage of backwater, gas, &c..

he valve-lid is arranged at an angle so that by its own weight it will automatically drop or swing into place and completely close the passage through the casing and remain tightly closed under all normal and practical conditions.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is'

1. Incombination, a valve-casing provided between its ends with a reduced portion having a valve-seat provided with a groove open at the top and the side walls of which diverge from bottom to top, and a valve located in said seat having a body portion shaped to conform to the groove of the valve-seat, whereby the valve can be dropped into the seat from above and will automatically set and fit tightly in said seat by the wedging of the one within the other.

2. A sewer-trap having in combination a casingprovided with a hand-hole formed by a projecting flange; a valve-seat projecting beyond and partially closing the hand-hole; a

plug or cover rovided with a recess in its ottom, for sea ing the hand-hole, thus providing a chamber between the valve-seat and "the plug; and a valve structure retained in said seat and pro'ecting well into said chamber and provide in-said projecting lportion with means to receive a removing imp ement, whereby when the plu is removed the valve structure presents itsef for easy and ready removal.

3. A sewer-trap comprising a casing provided with a-valve-seat having aflared oove,

in combination with avalve the b0 y portion of which is provided with an extended which partially closes said hole an flange and with a convergin portion cooperating with and automatical y tightly wedging itself into the flared (groove, and said body portion havin ivot'e thereto above the ange a valvei hangin at an angle to the valve-body a ainst said ange, whereby the valve is rigi y set in place and its lid normally remains closed. 1'

4. In combination with the valvecasing having the inner section provided with a valve-seat, the latter having a flared groove; of a composite 'valve' structure having a wedge-shaped body ortion seated and removably held in sai groove, said structure having the extended, flange portion atthe bottom; and a valve-lid pivoted to the body portion at the to and cooperating with said ange portion an held by the latter at an angle to the valve structure so as to remain normally closed and at rest upon the said flange. 5. In combination, a valve-casing having between its ends a hand-hole, and immediately below said hole a cylindrical ortion has a flared valve-seat in its end, a complete composite valve structure, including a wedgesha edbody portion, flange portion and pivote lid portion, retained in said valve-seat ortion by the structure of the latter and the body ortion in position ermitting bodilyremova through said han -hole, and means for sealin said hand-hole. P

6. sewer-trap comprising a casing rovided with a groove the side walls of w 'ch PHILIP F. LENHART.

Witnesses:

CHAs. McC. CHAPMAN, ARTHUR R. JARRETT. 

